Polarization gating of high harmonic generation in the water window
Abstract
We implement the polarization gating (PG) technique with a two-cycle, 1.7 μm driving field to generate an attosecond supercontinuum extending to the water window spectral region. The ellipticity dependence of the high harmonic yield over a photon energy range much broader than previous work is measured and compared with a semi-classical model. When PG is applied, the carrier-envelope phase (CEP) is swept to study its influence on the continuum generation. PG with one-cycle (5.7 fs) and two-cycle (11.3 fs) delay are tested, and both give continuous spectra spanning from 50 to 450 eV under certain CEP values, strongly indicating the generation of isolated attosecond pulses in the water window region.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 06, 2016
- Source ID
- 10.1063/1.4953402
Entities
People
- Eric Cunningham
- Jie Li
- Xiaoming Ren
- Yan Cheng
- Yanchun Yin
- Yi Wu
- Zenghu Chang
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- Defense Advanced Research Projects Agency
- National Science Foundation
- University of Central Florida